Gx Interface Support
Rel. 8 Gx Interface ▀
Cisco ASR 5x00 Packet Data Network Gateway Administration Guide ▄
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Event Reporting
QoS Control
Other Features
Binding
In the HA/PDSN Rel. 8 Gx implementation, since there are no bearers within a MIP session the IP-CAN Bearer concept
does not apply. Only authorized IP-CAN session is applicable.
Gating Control
Gating control is the blocking or allowing of packets belonging to an SDF, to pass through to the desired endpoint. A
gate is described within a PCC rule and gating control is applied on a per SDF basis. The commands to open or close the
gate leads to the enabling or disabling of the passage for corresponding IP packets. If the gate is closed, all packets of
the related IP flows are dropped. If the gate is open, the packets of the related IP flows are allowed to be forwarded.
Event Reporting
Important:
Unconditional reporting of event triggers from PCRF to PCEF when PCEF has not requested for is
not supported.
Important:
In the HA/PDSN Rel. 8 Gx implementation, only the AN_GW_CHANGE (21) event trigger is
supported.
Event reporting is the notification of and reaction to application events to trigger new behavior in the user plane as well
as the reporting of events related to the resources in the Gateway (PCEF). Event triggers may be used to determine
which IP-CAN session modification or specific event causes the PCEF to re-request PCC rules. Event trigger reporting
from PCEF to PCRF, and provisioning of event triggers happens at IP-CAN session level.
The Event Reporting Function (ERF) located in the PCEF, receives event triggers from PCRF during the Provision of
PCC Rules procedure and performs event trigger detection. When an event matching the received event trigger occurs,
the ERF reports the occurred event to the PCRF. If the provided event triggers are associated with certain parameter
values then the ERF includes those values in the response to the PCRF.
QoS Control
Important:
In the HA/PDSN Rel. 8 Gx implementation, only authorized IP-CAN Session is supported.
Provisioning of authorized QoS per IP-CAN bearer, policy enforcement for authorized QoS per QCI, and coordination
of authorized QoS scopes in mixed mode are not applicable.
QoS control is the authorization and enforcement of the maximum QoS that is authorized for an SDF. In case of an
aggregation of multiple SDFs, the combination of the authorized QoS information of the individual SDFs is provided as
the authorized QoS for this aggregate. QoS control per SDF allows the PCC architecture to provide the PCEF with the
authorized QoS to be enforced for each specific SDF.
QoS authorization information may be dynamically provisioned by the PCRF, or it can be a predefined PCC rule in the
PCEF. For a predefined PCC rule within the PCEF, the authorized QoS information takes affect when the PCC rule is
activated. The PCEF combines the different sets of authorized QoS information, that is the information received from
the PCRF and the information corresponding to the predefined PCC rules. The PCRF knows the authorized QoS
